STD 11 - 4. Chemical bonding and molecular structure — NEET STD 11 Science — Question

$(i)$ $\left[ FeF _{6}\right]^{3-}$

$(ii)$ $\left[ Co \left( NH _{3}\right)_{6}\right]^{3+}$

$(iii)$ $\left[ NiCl _{4}\right]^{2-}$

$(iv)$ $\left[ Cu \left( NH _{3}\right)_{4}\right]^{2+}$

$2 Fe ^{2+}+ H _{2} O _{2} \rightarrow x A + y B$

(in basic medium)

$2 MnO _{4}^{-}+6 H ^{+}+5 H _{2} O _{2} \rightarrow x ^{\prime} C + y ^{\prime} D + z ^{\prime} E$

(in acidic medium)

The sum of the stoichiometric coefficients $x , y , x ^{\prime}, y ^{\prime}$ and $z ^{\prime}$ for products $A , B , C , D$ and $E ,$ respectively, is............